A)Arrange the elements in the increasing order of the properties mentioned below.
B, C, Si, N, F [non-metallic character]
b) The first ionisation energy of Na is lesser than Mg, but the second ionisation
energy of Na is more than Mg. Explain
c) IE1 of Be is higher than B. Give reason

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.